#User represents the Mongoose model. find, count, and remove will issue async queries against mongo.

#this may pass some of the time but it is incorrect. The callback to the .find method which deletes the users
#may or may not have completed by the time the checkCount method is called. The same is true for checking the
#collection size after saving the user.
(next) ->
  checkCount = (expected) ->
    User.count {}, (err, count) ->
      next err if err?
      count.should.equal expected

  #find's all users and loops through collection to remove
  User.find {}, (err, users) ->
    next err if err?
    users.forEach (user) -> user.remove

  #check count is 0
  checkCount 0

  #save new user
  new User().save (err) -> next err if err?

  #check count is 1
  checkCount 1